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Lycorhinus angustidens

Reptilia - Heterodontosauridae

Taxonomy
Lycorhinus angustidens was named by Haughton (1924). Its type specimen is SAM 3606, a mandible, and it is not a trace fossil. Its type locality is Paballong, Mount Fletcher (zone B/2), which is in a Hettangian/Sinemurian terrestrial horizon in the Elliot Formation of South Africa.

It was considered a nomen dubium by Charig and Crompton (1974).

Synonyms
Synonymy list
YearName and author
1924Lycorhinus angustidens Haughton
1954Lycorhinus angustidens Haughton and Brink p. 170
1962Lycorhinus angustidens Crompton and Charig pp. 1076-1077
1963Lycorhinus angustidens Kermack p. 2
1970Lycorhinus angustidens Ellenberger p. 348
1970Lycorhinus angustidens Thulborn p. 236
1974Lycorhinus angustidens Thulborn p. 153
1975Lanasaurus scalpridens Gow
1975Lycorhinus angustidens Hopson pp. 303-304
1975Lycorhinus angustidens Thulborn p. 129
1978Lycorhinus angustidens Thuborn p. 187
1983Lanasaurus scalpridens Weishampel and Weishampel p. 44
1983Lycorhinus angustidens Weishampel and Weishampel p. 44
1984Lanasaurus scalpridens Olsen and Galton p. 91
1984Lycorhinus angustidens Olsen and Galton p. 91
1990Lanasaurus scalpridens Weishampel and Witmer p. 487
1990Lycorhinus angustidens Weishampel and Witmer p. 487
1992Lanasaurus scalpridens Weishampel and Heinrich p. 173
1997Lycorhinus angustidens Chinsamy p. 677
1997Lycorhinus angustidens Smith p. 317
2004Lycorhinus angustidens Norman et al. p. 394
2008Lycorhinus angustidens Butler et al. p. 709
2008Lycorhinus angustidens Butler et al. p. 10
2008Lycorhinus angustidens Irmis and Knoll p. 123
2012Lycorhinus angustidens Han et al. p. 1391 fig. 14
2012Lycorhinus angustidens Sereno p. 133 figs. 3, 73-80

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
RankNameAuthor
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
familyHeterodontosauridae
genusLycorhinus
speciesangustidens

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
R. J. Butler et al. 2008The marked medial curvature of the dentary and maxillary tooth rows.
P. C. Sereno 2012Heterodontosaurid ornithischian characterized by the follow- ing two autapomorphies: (1) prominent ridge on the distal crown margin running from the first denticle to the cingulum (labial aspect of maxillary crowns, lingual aspect
of dentary crowns); (2) lingually curved maxillary and dentary tooth rows.